Doctors treating an American doctor who rushed to Liberia to assist after two previous American health workers were infected with Ebola say his condition is stable but it’s too early to say if he will recover.

Dr. Rick Sacra is in isolation at Nebraska Medical Center and is described as “very tired and stable.”

“We are encouraged by what we see, but it’s too early to say he has turned a corner,” Dr. Phil Smith told Fox News.  Dr. Smith said that Sacra is being treated with an experimental drug that is different than the ZMapp given to two previous American victims of the virus.

Dr. Smith also said that Dr. Sacra, while still very sick, has been keenly observing his condition and vital signs and is giving tips on the best way to provide his treatment.

Dr. Sacra’s family was able to visit with him through a video link for almost half an hour.

“He asked for something to eat and had a little chicken soup,” Debbie Sacra said in a statement.

The doctor had been serving with the Christian missionary outfit SIM, the same organization that previous victim Nancy Writebol had been working with in Liberia.